Determination of Organochlorine and Synthetic Pyrethroid Pesticide Residues in Water Samples Collected from Different Locations of Bangladesh

The present study was aimed to validate an analytical method for the quantification of 19 organochlorine and 2 synthetic pyrethroid pesticide residues in water samples using modified quick, easy, cheap, effective, rugged safe (QuEChERS) extraction Gas Chromatography coupled with Electron Capture Detector (ECD). selected were determined by in-house validated method. evaluating accuracy, precision, linearity, limit detection (LOD) (LOQ). average recoveries pesticides ranged from 78% 117% RSDr ? 12% two fortification levels 0.02 0.1 mg/L. linearity ?0.995 all pesticides. LOD 0.003 0.006 mg/L LOQ analytes. This applied satisfactorily residue analysis 108 collected nine districts Bangladesh. Among analyzed samples, only 4 had cypermethrin (0.026 mg/L, 0.034 0.045 0.05 mg/L). level detected above WHO recommended guide line values quality.